research Analysis of the penetration of a caffeine containing shampoo into the hair follicles by in vivo laser scanning microscopy 26 citations , December 2009 in “Laser Physics” Caffeine from shampoo penetrates hair follicles quickly and stays for at least 24 hours.
research Investigation of the penetration and storage of a shampoo formulation containing caffeine into the hair follicles by in vivo laser scanning microscopy 24 citations , February 2007 in “Laser Physics Letters” Caffeine shampoo penetrates hair follicles deeply and stays for up to 48 hours.
research Characterization and quantification of wound-induced hair follicle neogenesis using in vivo confocal scanning laser microscopy 26 citations , April 2011 in “Skin Research and Technology” In vivo confocal scanning laser microscopy is an effective, non-invasive way to study and measure new hair growth after skin injury in mice.
research Investigation of in vitro and in vivo skin permeability using laser scanning microscopy January 2022 in “OPAL (Open@LaTrobe) (La Trobe University)” Nanoparticles in sunscreen are generally safe as they stay on the skin's surface.
research Investigation of differences in follicular penetration of particle-and nonparticle-containing emulsions by laser scanning microscopy 46 citations , May 2006 in “Laser Physics” Particles similar in size to hair cells penetrate hair follicles better.
community A meta analysis of 18 popular hair loss treatments. An 2022 guide on efficacy. From finasteride and minoxidil to caffeine shampoo, saw palmetto and biotin. 96 Scientific References included. in Research/Science 103 upvotes 4 years ago Most hair loss treatments are ineffective; only finasteride, dutasteride, and minoxidil show effectiveness.
learn Osteopontin signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss